Question

Which of the numbers 192, 639 and 144 is exactly divisible by all the three numbers 3, 4 and 9?​

Answer 1

Answer:

144

Step-by-step explanation:

Rule for 3: add up the number and if the sum is divisible by 3 then the number 1s divisible by 3.

• 1 + 4 + 4 = 9
• 9 / 3 = 3
• 3 is divisible by 3

Rule for 4 : The last two digits should be divisible by 4.

• 144
• 44 / 4

Rule for 9: when the sum of these digits is a multiple of 9.

• 1 + 4 + 4
• 9
• 9 is a multiple of 9